I wanted to get some different views about this topic. Feelings on whether there should be tension on the truss rod, moderate tension, or no tension at all when installing new frets. I glue frets in with cyanoacrylate glue, and leave the truss rod completely backed off - this is how I was taught.
Generally, I have good success with this technique, but there are jobs when things seem to go askew without explanation, usually resulting in a head-scratching re-do. Perhaps a new approach is in the cards.
I look forward to hearing your thoughts.